Abstract: To provide a possibility to have a near-real-time replay of a pre-empted communication while ensuring that the pre-empting communication is not interrupted, when it is detected that a pre-empting communication is pre-empting a pre-empted communication, the pre-empted communication is buffered to a buffer for a replay, and a safety interval for the pre-empting communication is determined. The pre-empting communication is determined to be ended in response to an expiry of the safety interval after end of the pre-empting communication.

Abstract: When a communication session is implemented, the communications of a direct mode terminal may be mediated via a direct mode gateway such that messages of a direct mode first terminal are addressed with identification information of the direct mode gateway. In the invention identity information of a user of the direct mode terminal is delivered to a trunked mode terminal in a user plane signalling message of the communication session. In terminal procedures identity of the direct mode gateway may be replaced by identity information received in the user plane signalling message. Identity of the direct mode terminal is then in a simple manner made available to terminal procedures of the trunked mode terminal.